Different thank you page in multilingual mode?

Hy

Does it possible to create different thank you page (in different language) when we use the multilangual mode.

Yes, I believe that is possible using conditional logic. Here's a specific guide that you can refer to: http://www.jotform.com/help/333-How-to-change-thank-you-message-depending-on-the-language-used 

Let us know if that works.